X1,Y1,X2,Y2,X3,Y3=map(int,raw_input().split())
if (X2-X1)*(X2-X1)+(Y2-Y1)*(Y2-Y1) == (X3-X1)*(X3-X1)+(Y3-Y1)*(Y3-Y1) and (X3-X1)*(X2-X1)+(Y3-Y1)*(Y2-Y1)==0:
    print X3+(X2-X1),Y3+(Y2-Y1)
    exit()
X1,Y1,X2,Y2=X2,Y2,X1,Y1
if (X2-X1)*(X2-X1)+(Y2-Y1)*(Y2-Y1) == (X3-X1)*(X3-X1)+(Y3-Y1)*(Y3-Y1) and (X3-X1)*(X2-X1)+(Y3-Y1)*(Y2-Y1)==0:
    print X3+(X2-X1),Y3+(Y2-Y1)
    exit()
X1,Y1,X3,Y3=X3,Y3,X1,Y1
if (X2-X1)*(X2-X1)+(Y2-Y1)*(Y2-Y1) == (X3-X1)*(X3-X1)+(Y3-Y1)*(Y3-Y1) and (X3-X1)*(X2-X1)+(Y3-Y1)*(Y2-Y1)==0:
    print X3+(X2-X1),Y3+(Y2-Y1)
    exit()
print -1